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Old 06-04-2013, 11:47 PM   #1
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Oil change Q...

Told that oil change before smog is good to lower HC/CO, had 5w30 in it and just bought some 10w40 due to the summer weather coming up. My Q is should I change the oil filter as well( filter has probably less than 500 miles used on it, but mainly wasn't sure about mixing that little bit of 5w with the new 10w40.

Any help?

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Old 06-05-2013, 12:07 AM   #2
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change the filter too, mixing that little bit of oil probably is fine. But I'd change it anyway.

91 YJ, 4.0L HO, 32X11.5X15 Wild Country, 3" lift, 6" Rugged Ridge All Terrain Fender Flare Set, custom mud flaps
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Old 06-05-2013, 08:18 AM   #3
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Yea, I would change it. For the little cost a filter is its not worth any problems that could come about but are very unlikely to happen.
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